#!/bin/sh

#
# Copyright (c) 2009, NICE s.r.l.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#  1. Redistributions of source code must retain the above copyright notice,
#     this list of conditions and the following disclaimer.
#  2. Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#  3. Neither the name of NICE s.r.l. nor the names of its contributors may
#     be used to endorse or promote products derived from this software
#     without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

#------------------------------------------------------------------------------
# add_user: utility to remove a user
#
# Authors:
#   Marco Piras <marco.piras@nice-software.com>
#------------------------------------------------------------------------------

# load configuration
. `dirname "${0}"`/../conf/ef.irods.conf

# user map
USER_MAP="`dirname ${0}`/../auth/users.mapping"

# FIXME: move in a file shared with the auth scripts
obfuscate() {
    echo "${1}" | tr '!-~' 'P-~!-O'
}

checkuser() {
    grep "^${1}:" "${USER_MAP}" 2>&1 >/dev/null
}

usage() {
    echo "`basename ${0}` <EF_USER>" >&2
    exit 1
}

error() {
    echo "${@}" >&2
    exit 1
}

if [ ${#} != 1 ] ; then
    usage
    exit 1
fi

if [ ! -f "${USER_MAP}" ]; then
    error "Could not find \"${USER_MAP}\""
fi

# Check if the user is registered
checkuser "${1}" || error "User \"${1}\" is not mapped"

# update the map
sed -i "/^${1}:/d" "${USER_MAP}" || error "Could not remove user \"${1}\""
echo "User \"${1}\" correctly removed."

# ex:ts=4:et:
